author  kuncar 
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permissions  rwrr 
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(* Title: HOL/Lifting.thy 
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Author: Brian Huffman and Ondrej Kuncar 

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Author: Cezary Kaliszyk and Christian Urban 

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*) 

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header {* Lifting package *} 

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theory Lifting 

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imports Equiv_Relations Transfer 
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keywords 
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"parametric" and 
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"print_quotmaps" "print_quotients" :: diag and 
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"lift_definition" :: thy_goal and 

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"setup_lifting" :: thy_decl 

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begin 

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subsection {* Function map *} 
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notation map_fun (infixr ">" 55) 

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lemma map_fun_id: 

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"(id > id) = id" 

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by (simp add: fun_eq_iff) 

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subsection {* Other predicates on relations *} 
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definition left_total :: "('a \<Rightarrow> 'b \<Rightarrow> bool) \<Rightarrow> bool" 

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where "left_total R \<longleftrightarrow> (\<forall>x. \<exists>y. R x y)" 

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lemma left_totalI: 

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"(\<And>x. \<exists>y. R x y) \<Longrightarrow> left_total R" 

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unfolding left_total_def by blast 

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lemma left_totalE: 

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assumes "left_total R" 

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obtains "(\<And>x. \<exists>y. R x y)" 

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using assms unfolding left_total_def by blast 

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definition left_unique :: "('a \<Rightarrow> 'b \<Rightarrow> bool) \<Rightarrow> bool" 

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where "left_unique R \<longleftrightarrow> (\<forall>x y z. R x z \<longrightarrow> R y z \<longrightarrow> x = y)" 

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lemma left_total_fun: 
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"\<lbrakk>left_unique A; left_total B\<rbrakk> \<Longrightarrow> left_total (A ===> B)" 
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unfolding left_total_def fun_rel_def 
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apply (rule allI, rename_tac f) 
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apply (rule_tac x="\<lambda>y. SOME z. B (f (THE x. A x y)) z" in exI) 
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apply clarify 
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apply (subgoal_tac "(THE x. A x y) = x", simp) 
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apply (rule someI_ex) 
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apply (simp) 
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apply (rule the_equality) 
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apply assumption 
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apply (simp add: left_unique_def) 
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done 
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lemma left_unique_fun: 
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"\<lbrakk>left_total A; left_unique B\<rbrakk> \<Longrightarrow> left_unique (A ===> B)" 
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unfolding left_total_def left_unique_def fun_rel_def 
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by (clarify, rule ext, fast) 
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lemma left_total_eq: "left_total op=" unfolding left_total_def by blast 
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lemma left_unique_eq: "left_unique op=" unfolding left_unique_def by blast 
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subsection {* Quotient Predicate *} 
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definition 

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"Quotient R Abs Rep T \<longleftrightarrow> 

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(\<forall>a. Abs (Rep a) = a) \<and> 

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(\<forall>a. R (Rep a) (Rep a)) \<and> 

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(\<forall>r s. R r s \<longleftrightarrow> R r r \<and> R s s \<and> Abs r = Abs s) \<and> 

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T = (\<lambda>x y. R x x \<and> Abs x = y)" 

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lemma QuotientI: 

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assumes "\<And>a. Abs (Rep a) = a" 

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and "\<And>a. R (Rep a) (Rep a)" 

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and "\<And>r s. R r s \<longleftrightarrow> R r r \<and> R s s \<and> Abs r = Abs s" 

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and "T = (\<lambda>x y. R x x \<and> Abs x = y)" 

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shows "Quotient R Abs Rep T" 

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using assms unfolding Quotient_def by blast 

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context 
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fixes R Abs Rep T 

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assumes a: "Quotient R Abs Rep T" 
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begin 
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lemma Quotient_abs_rep: "Abs (Rep a) = a" 

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using a unfolding Quotient_def 

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by simp 
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lemma Quotient_rep_reflp: "R (Rep a) (Rep a)" 
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using a unfolding Quotient_def 

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by blast 
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lemma Quotient_rel: 

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"R r r \<and> R s s \<and> Abs r = Abs s \<longleftrightarrow> R r s"  {* orientation does not loop on rewriting *} 
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using a unfolding Quotient_def 

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by blast 
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lemma Quotient_cr_rel: "T = (\<lambda>x y. R x x \<and> Abs x = y)" 
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using a unfolding Quotient_def 
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by blast 

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lemma Quotient_refl1: "R r s \<Longrightarrow> R r r" 
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using a unfolding Quotient_def 

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by fast 

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lemma Quotient_refl2: "R r s \<Longrightarrow> R s s" 

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using a unfolding Quotient_def 

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by fast 

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lemma Quotient_rel_rep: "R (Rep a) (Rep b) \<longleftrightarrow> a = b" 

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using a unfolding Quotient_def 

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by metis 

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lemma Quotient_rep_abs: "R r r \<Longrightarrow> R (Rep (Abs r)) r" 

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using a unfolding Quotient_def 
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by blast 

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lemma Quotient_rep_abs_fold_unmap: 
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assumes "x' \<equiv> Abs x" and "R x x" and "Rep x' \<equiv> Rep' x'" 
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shows "R (Rep' x') x" 
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proof  
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have "R (Rep x') x" using assms(12) Quotient_rep_abs by auto 
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then show ?thesis using assms(3) by simp 
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qed 
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lemma Quotient_Rep_eq: 
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assumes "x' \<equiv> Abs x" 
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shows "Rep x' \<equiv> Rep x'" 
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by simp 
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lemma Quotient_rel_abs: "R r s \<Longrightarrow> Abs r = Abs s" 
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using a unfolding Quotient_def 

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by blast 

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lemma Quotient_rel_abs2: 
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assumes "R (Rep x) y" 
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shows "x = Abs y" 
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proof  
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from assms have "Abs (Rep x) = Abs y" by (auto intro: Quotient_rel_abs) 
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then show ?thesis using assms(1) by (simp add: Quotient_abs_rep) 
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qed 
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lemma Quotient_symp: "symp R" 
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using a unfolding Quotient_def using sympI by (metis (full_types)) 
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lemma Quotient_transp: "transp R" 
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using a unfolding Quotient_def using transpI by (metis (full_types)) 
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lemma Quotient_part_equivp: "part_equivp R" 
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by (metis Quotient_rep_reflp Quotient_symp Quotient_transp part_equivpI) 

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154 
end 

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lemma identity_quotient: "Quotient (op =) id id (op =)" 

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unfolding Quotient_def by simp 

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text {* TODO: Use one of these alternatives as the real definition. *} 
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lemma Quotient_alt_def: 
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"Quotient R Abs Rep T \<longleftrightarrow> 

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(\<forall>a b. T a b \<longrightarrow> Abs a = b) \<and> 

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(\<forall>b. T (Rep b) b) \<and> 

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(\<forall>x y. R x y \<longleftrightarrow> T x (Abs x) \<and> T y (Abs y) \<and> Abs x = Abs y)" 

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apply safe 

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apply (simp (no_asm_use) only: Quotient_def, fast) 

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apply (simp (no_asm_use) only: Quotient_def, fast) 

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apply (simp (no_asm_use) only: Quotient_def, fast) 

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apply (simp (no_asm_use) only: Quotient_def, fast) 

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apply (simp (no_asm_use) only: Quotient_def, fast) 

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apply (simp (no_asm_use) only: Quotient_def, fast) 

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apply (rule QuotientI) 

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apply simp 

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apply metis 

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apply simp 

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apply (rule ext, rule ext, metis) 

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done 

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lemma Quotient_alt_def2: 

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"Quotient R Abs Rep T \<longleftrightarrow> 

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(\<forall>a b. T a b \<longrightarrow> Abs a = b) \<and> 

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(\<forall>b. T (Rep b) b) \<and> 

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(\<forall>x y. R x y \<longleftrightarrow> T x (Abs y) \<and> T y (Abs x))" 

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unfolding Quotient_alt_def by (safe, metis+) 

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lemma Quotient_alt_def3: 
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"Quotient R Abs Rep T \<longleftrightarrow> 
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(\<forall>a b. T a b \<longrightarrow> Abs a = b) \<and> (\<forall>b. T (Rep b) b) \<and> 
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(\<forall>x y. R x y \<longleftrightarrow> (\<exists>z. T x z \<and> T y z))" 
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unfolding Quotient_alt_def2 by (safe, metis+) 
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lemma Quotient_alt_def4: 
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"Quotient R Abs Rep T \<longleftrightarrow> 
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(\<forall>a b. T a b \<longrightarrow> Abs a = b) \<and> (\<forall>b. T (Rep b) b) \<and> R = T OO conversep T" 
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unfolding Quotient_alt_def3 fun_eq_iff by auto 
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lemma fun_quotient: 
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assumes 1: "Quotient R1 abs1 rep1 T1" 

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assumes 2: "Quotient R2 abs2 rep2 T2" 

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shows "Quotient (R1 ===> R2) (rep1 > abs2) (abs1 > rep2) (T1 ===> T2)" 

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using assms unfolding Quotient_alt_def2 

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unfolding fun_rel_def fun_eq_iff map_fun_apply 

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by (safe, metis+) 

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206 
lemma apply_rsp: 

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fixes f g::"'a \<Rightarrow> 'c" 

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assumes q: "Quotient R1 Abs1 Rep1 T1" 

209 
and a: "(R1 ===> R2) f g" "R1 x y" 

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shows "R2 (f x) (g y)" 

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using a by (auto elim: fun_relE) 

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213 
lemma apply_rsp': 

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assumes a: "(R1 ===> R2) f g" "R1 x y" 

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shows "R2 (f x) (g y)" 

216 
using a by (auto elim: fun_relE) 

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218 
lemma apply_rsp'': 

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assumes "Quotient R Abs Rep T" 

220 
and "(R ===> S) f f" 

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shows "S (f (Rep x)) (f (Rep x))" 

222 
proof  

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from assms(1) have "R (Rep x) (Rep x)" by (rule Quotient_rep_reflp) 

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then show ?thesis using assms(2) by (auto intro: apply_rsp') 

225 
qed 

226 

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subsection {* Quotient composition *} 

228 

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lemma Quotient_compose: 

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assumes 1: "Quotient R1 Abs1 Rep1 T1" 

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assumes 2: "Quotient R2 Abs2 Rep2 T2" 

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shows "Quotient (T1 OO R2 OO conversep T1) (Abs2 \<circ> Abs1) (Rep1 \<circ> Rep2) (T1 OO T2)" 

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using assms unfolding Quotient_alt_def4 by fastforce 
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lemma equivp_reflp2: 
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"equivp R \<Longrightarrow> reflp R" 
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by (erule equivpE) 
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47544  239 
subsection {* Respects predicate *} 
240 

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definition Respects :: "('a \<Rightarrow> 'a \<Rightarrow> bool) \<Rightarrow> 'a set" 

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where "Respects R = {x. R x x}" 

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lemma in_respects: "x \<in> Respects R \<longleftrightarrow> R x x" 

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unfolding Respects_def by simp 

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47308  247 
subsection {* Invariant *} 
248 

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definition invariant :: "('a \<Rightarrow> bool) \<Rightarrow> 'a \<Rightarrow> 'a \<Rightarrow> bool" 

250 
where "invariant R = (\<lambda>x y. R x \<and> x = y)" 

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lemma invariant_to_eq: 

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assumes "invariant P x y" 

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shows "x = y" 

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using assms by (simp add: invariant_def) 

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lemma fun_rel_eq_invariant: 

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shows "((invariant R) ===> S) = (\<lambda>f g. \<forall>x. R x \<longrightarrow> S (f x) (g x))" 

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by (auto simp add: invariant_def fun_rel_def) 

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lemma invariant_same_args: 

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shows "invariant P x x \<equiv> P x" 

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using assms by (auto simp add: invariant_def) 

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lemma UNIV_typedef_to_Quotient: 
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assumes "type_definition Rep Abs UNIV" 
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and T_def: "T \<equiv> (\<lambda>x y. x = Rep y)" 
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shows "Quotient (op =) Abs Rep T" 
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proof  

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interpret type_definition Rep Abs UNIV by fact 

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from Abs_inject Rep_inverse Abs_inverse T_def show ?thesis 
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by (fastforce intro!: QuotientI fun_eq_iff) 
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qed 
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lemma UNIV_typedef_to_equivp: 
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fixes Abs :: "'a \<Rightarrow> 'b" 
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and Rep :: "'b \<Rightarrow> 'a" 

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assumes "type_definition Rep Abs (UNIV::'a set)" 

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shows "equivp (op=::'a\<Rightarrow>'a\<Rightarrow>bool)" 

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by (rule identity_equivp) 

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lemma typedef_to_Quotient: 
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assumes "type_definition Rep Abs S" 
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and T_def: "T \<equiv> (\<lambda>x y. x = Rep y)" 
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shows "Quotient (invariant (\<lambda>x. x \<in> S)) Abs Rep T" 
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286 
proof  
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287 
interpret type_definition Rep Abs S by fact 
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288 
from Rep Abs_inject Rep_inverse Abs_inverse T_def show ?thesis 
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289 
by (auto intro!: QuotientI simp: invariant_def fun_eq_iff) 
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290 
qed 
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291 

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292 
lemma typedef_to_part_equivp: 
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293 
assumes "type_definition Rep Abs S" 
47501  294 
shows "part_equivp (invariant (\<lambda>x. x \<in> S))" 
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295 
proof (intro part_equivpI) 
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296 
interpret type_definition Rep Abs S by fact 
47501  297 
show "\<exists>x. invariant (\<lambda>x. x \<in> S) x x" using Rep by (auto simp: invariant_def) 
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298 
next 
47501  299 
show "symp (invariant (\<lambda>x. x \<in> S))" by (auto intro: sympI simp: invariant_def) 
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300 
next 
47501  301 
show "transp (invariant (\<lambda>x. x \<in> S))" by (auto intro: transpI simp: invariant_def) 
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302 
qed 
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303 

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304 
lemma open_typedef_to_Quotient: 
47308  305 
assumes "type_definition Rep Abs {x. P x}" 
47354  306 
and T_def: "T \<equiv> (\<lambda>x y. x = Rep y)" 
47308  307 
shows "Quotient (invariant P) Abs Rep T" 
47651  308 
using typedef_to_Quotient [OF assms] by simp 
47308  309 

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310 
lemma open_typedef_to_part_equivp: 
47308  311 
assumes "type_definition Rep Abs {x. P x}" 
312 
shows "part_equivp (invariant P)" 

47651  313 
using typedef_to_part_equivp [OF assms] by simp 
47308  314 

47376  315 
text {* Generating transfer rules for quotients. *} 
316 

47537  317 
context 
318 
fixes R Abs Rep T 

319 
assumes 1: "Quotient R Abs Rep T" 

320 
begin 

47376  321 

47537  322 
lemma Quotient_right_unique: "right_unique T" 
323 
using 1 unfolding Quotient_alt_def right_unique_def by metis 

324 

325 
lemma Quotient_right_total: "right_total T" 

326 
using 1 unfolding Quotient_alt_def right_total_def by metis 

327 

328 
lemma Quotient_rel_eq_transfer: "(T ===> T ===> op =) R (op =)" 

329 
using 1 unfolding Quotient_alt_def fun_rel_def by simp 

47376  330 

47538  331 
lemma Quotient_abs_induct: 
332 
assumes "\<And>y. R y y \<Longrightarrow> P (Abs y)" shows "P x" 

333 
using 1 assms unfolding Quotient_def by metis 

334 

47537  335 
end 
336 

337 
text {* Generating transfer rules for total quotients. *} 

47376  338 

47537  339 
context 
340 
fixes R Abs Rep T 

341 
assumes 1: "Quotient R Abs Rep T" and 2: "reflp R" 

342 
begin 

47376  343 

47537  344 
lemma Quotient_bi_total: "bi_total T" 
345 
using 1 2 unfolding Quotient_alt_def bi_total_def reflp_def by auto 

346 

347 
lemma Quotient_id_abs_transfer: "(op = ===> T) (\<lambda>x. x) Abs" 

348 
using 1 2 unfolding Quotient_alt_def reflp_def fun_rel_def by simp 

349 

47575  350 
lemma Quotient_total_abs_induct: "(\<And>y. P (Abs y)) \<Longrightarrow> P x" 
351 
using 1 2 assms unfolding Quotient_alt_def reflp_def by metis 

352 

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lemma Quotient_total_abs_eq_iff: "Abs x = Abs y \<longleftrightarrow> R x y" 
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using Quotient_rel [OF 1] 2 unfolding reflp_def by simp 
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355 

47537  356 
end 
47376  357 

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358 
text {* Generating transfer rules for a type defined with @{text "typedef"}. *} 
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359 

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360 
context 
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361 
fixes Rep Abs A T 
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362 
assumes type: "type_definition Rep Abs A" 
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363 
assumes T_def: "T \<equiv> (\<lambda>(x::'a) (y::'b). x = Rep y)" 
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364 
begin 
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365 

51994  366 
lemma typedef_left_unique: "left_unique T" 
367 
unfolding left_unique_def T_def 

368 
by (simp add: type_definition.Rep_inject [OF type]) 

369 

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370 
lemma typedef_bi_unique: "bi_unique T" 
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371 
unfolding bi_unique_def T_def 
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372 
by (simp add: type_definition.Rep_inject [OF type]) 
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373 

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374 
(* the following two theorems are here only for convinience *) 
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375 

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376 
lemma typedef_right_unique: "right_unique T" 
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377 
using T_def type Quotient_right_unique typedef_to_Quotient 
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378 
by blast 
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379 

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380 
lemma typedef_right_total: "right_total T" 
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381 
using T_def type Quotient_right_total typedef_to_Quotient 
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382 
by blast 
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383 

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384 
lemma typedef_rep_transfer: "(T ===> op =) (\<lambda>x. x) Rep" 
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385 
unfolding fun_rel_def T_def by simp 
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386 

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387 
end 
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388 

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389 
text {* Generating the correspondence rule for a constant defined with 
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390 
@{text "lift_definition"}. *} 
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391 

47351  392 
lemma Quotient_to_transfer: 
393 
assumes "Quotient R Abs Rep T" and "R c c" and "c' \<equiv> Abs c" 

394 
shows "T c c'" 

395 
using assms by (auto dest: Quotient_cr_rel) 

396 

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397 
text {* Proving reflexivity *} 
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398 

51994  399 
definition reflp' :: "('a \<Rightarrow> 'a \<Rightarrow> bool) \<Rightarrow> bool" where "reflp' R \<equiv> reflp R" 
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400 

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401 
lemma Quotient_to_left_total: 
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402 
assumes q: "Quotient R Abs Rep T" 
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403 
and r_R: "reflp R" 
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404 
shows "left_total T" 
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405 
using r_R Quotient_cr_rel[OF q] unfolding left_total_def by (auto elim: reflpE) 
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406 

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407 
lemma reflp_Quotient_composition: 
51994  408 
assumes "left_total R" 
409 
assumes "reflp T" 

410 
shows "reflp (R OO T OO R\<inverse>\<inverse>)" 

411 
using assms unfolding reflp_def left_total_def by fast 

412 

413 
lemma reflp_fun1: 

414 
assumes "is_equality R" 

415 
assumes "reflp' S" 

416 
shows "reflp (R ===> S)" 

417 
using assms unfolding is_equality_def reflp'_def reflp_def fun_rel_def by blast 

418 

419 
lemma reflp_fun2: 

420 
assumes "is_equality R" 

421 
assumes "is_equality S" 

422 
shows "reflp (R ===> S)" 

423 
using assms unfolding is_equality_def reflp_def fun_rel_def by blast 

424 

425 
lemma is_equality_Quotient_composition: 

426 
assumes "is_equality T" 

427 
assumes "left_total R" 

428 
assumes "left_unique R" 

429 
shows "is_equality (R OO T OO R\<inverse>\<inverse>)" 

430 
using assms unfolding is_equality_def left_total_def left_unique_def OO_def conversep_iff 

431 
by fastforce 

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432 

52307  433 
lemma left_total_composition: "left_total R \<Longrightarrow> left_total S \<Longrightarrow> left_total (R OO S)" 
434 
unfolding left_total_def OO_def by fast 

435 

436 
lemma left_unique_composition: "left_unique R \<Longrightarrow> left_unique S \<Longrightarrow> left_unique (R OO S)" 

437 
unfolding left_unique_def OO_def by fast 

438 

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439 
lemma reflp_equality: "reflp (op =)" 
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440 
by (auto intro: reflpI) 
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441 

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442 
text {* Proving a parametrized correspondence relation *} 
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443 

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444 
lemma eq_OO: "op= OO R = R" 
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445 
unfolding OO_def by metis 
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446 

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447 
definition POS :: "('a \<Rightarrow> 'b \<Rightarrow> bool) \<Rightarrow> ('a \<Rightarrow> 'b \<Rightarrow> bool) \<Rightarrow> bool" where 
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448 
"POS A B \<equiv> A \<le> B" 
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449 

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450 
definition NEG :: "('a \<Rightarrow> 'b \<Rightarrow> bool) \<Rightarrow> ('a \<Rightarrow> 'b \<Rightarrow> bool) \<Rightarrow> bool" where 
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451 
"NEG A B \<equiv> B \<le> A" 
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452 

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453 
(* 
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454 
The following two rules are here because we don't have any proper 
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455 
leftunique ant lefttotal relations. Leftunique and lefttotal 
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456 
assumptions show up in distributivity rules for the function type. 
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457 
*) 
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458 

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459 
lemma bi_unique_left_unique[transfer_rule]: "bi_unique R \<Longrightarrow> left_unique R" 
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460 
unfolding bi_unique_def left_unique_def by blast 
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461 

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462 
lemma bi_total_left_total[transfer_rule]: "bi_total R \<Longrightarrow> left_total R" 
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463 
unfolding bi_total_def left_total_def by blast 
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464 

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465 
lemma pos_OO_eq: 
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466 
shows "POS (A OO op=) A" 
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467 
unfolding POS_def OO_def by blast 
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468 

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469 
lemma pos_eq_OO: 
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470 
shows "POS (op= OO A) A" 
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471 
unfolding POS_def OO_def by blast 
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472 

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473 
lemma neg_OO_eq: 
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474 
shows "NEG (A OO op=) A" 
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475 
unfolding NEG_def OO_def by auto 
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476 

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477 
lemma neg_eq_OO: 
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478 
shows "NEG (op= OO A) A" 
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479 
unfolding NEG_def OO_def by blast 
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480 

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481 
lemma POS_trans: 
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482 
assumes "POS A B" 
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483 
assumes "POS B C" 
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484 
shows "POS A C" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

485 
using assms unfolding POS_def by auto 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

486 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

487 
lemma NEG_trans: 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

488 
assumes "NEG A B" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

489 
assumes "NEG B C" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

490 
shows "NEG A C" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

491 
using assms unfolding NEG_def by auto 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

492 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

493 
lemma POS_NEG: 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

494 
"POS A B \<equiv> NEG B A" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

495 
unfolding POS_def NEG_def by auto 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

496 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

497 
lemma NEG_POS: 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

498 
"NEG A B \<equiv> POS B A" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

499 
unfolding POS_def NEG_def by auto 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

500 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

501 
lemma POS_pcr_rule: 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

502 
assumes "POS (A OO B) C" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

503 
shows "POS (A OO B OO X) (C OO X)" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

504 
using assms unfolding POS_def OO_def by blast 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

505 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

506 
lemma NEG_pcr_rule: 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

507 
assumes "NEG (A OO B) C" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

508 
shows "NEG (A OO B OO X) (C OO X)" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

509 
using assms unfolding NEG_def OO_def by blast 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

510 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

511 
lemma POS_apply: 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

512 
assumes "POS R R'" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

513 
assumes "R f g" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

514 
shows "R' f g" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

515 
using assms unfolding POS_def by auto 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

516 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

517 
text {* Proving a parametrized correspondence relation *} 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

518 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

519 
lemma fun_mono: 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

520 
assumes "A \<ge> C" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

521 
assumes "B \<le> D" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

522 
shows "(A ===> B) \<le> (C ===> D)" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

523 
using assms unfolding fun_rel_def by blast 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

524 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

525 
lemma pos_fun_distr: "((R ===> S) OO (R' ===> S')) \<le> ((R OO R') ===> (S OO S'))" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

526 
unfolding OO_def fun_rel_def by blast 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

527 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

528 
lemma functional_relation: "right_unique R \<Longrightarrow> left_total R \<Longrightarrow> \<forall>x. \<exists>!y. R x y" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

529 
unfolding right_unique_def left_total_def by blast 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

530 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

531 
lemma functional_converse_relation: "left_unique R \<Longrightarrow> right_total R \<Longrightarrow> \<forall>y. \<exists>!x. R x y" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

532 
unfolding left_unique_def right_total_def by blast 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

533 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

534 
lemma neg_fun_distr1: 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

535 
assumes 1: "left_unique R" "right_total R" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

536 
assumes 2: "right_unique R'" "left_total R'" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

537 
shows "(R OO R' ===> S OO S') \<le> ((R ===> S) OO (R' ===> S')) " 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

538 
using functional_relation[OF 2] functional_converse_relation[OF 1] 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

539 
unfolding fun_rel_def OO_def 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

540 
apply clarify 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

541 
apply (subst all_comm) 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

542 
apply (subst all_conj_distrib[symmetric]) 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

543 
apply (intro choice) 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

544 
by metis 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

545 

84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

546 
lemma neg_fun_distr2: 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

547 
assumes 1: "right_unique R'" "left_total R'" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

548 
assumes 2: "left_unique S'" "right_total S'" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

549 
shows "(R OO R' ===> S OO S') \<le> ((R ===> S) OO (R' ===> S'))" 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

550 
using functional_converse_relation[OF 2] functional_relation[OF 1] 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

551 
unfolding fun_rel_def OO_def 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

552 
apply clarify 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

553 
apply (subst all_comm) 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

554 
apply (subst all_conj_distrib[symmetric]) 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

555 
apply (intro choice) 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

556 
by metis 
84d01fd733cf
lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
kuncar
parents:
51112
diff
changeset

557 

51956
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

558 
subsection {* Domains *} 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

559 

a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

560 
lemma pcr_Domainp_par_left_total: 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

561 
assumes "Domainp B = P" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

562 
assumes "left_total A" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

563 
assumes "(A ===> op=) P' P" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

564 
shows "Domainp (A OO B) = P'" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

565 
using assms 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

566 
unfolding Domainp_iff[abs_def] OO_def bi_unique_def left_total_def fun_rel_def 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

567 
by (fast intro: fun_eq_iff) 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

568 

a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

569 
lemma pcr_Domainp_par: 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

570 
assumes "Domainp B = P2" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

571 
assumes "Domainp A = P1" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

572 
assumes "(A ===> op=) P2' P2" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

573 
shows "Domainp (A OO B) = (inf P1 P2')" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

574 
using assms unfolding fun_rel_def Domainp_iff[abs_def] OO_def 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

575 
by (fast intro: fun_eq_iff) 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

576 

a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

577 
definition rel_pred_comp :: "('a => 'b => bool) => ('b => bool) => 'a => bool" (infixr "OP" 75) 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

578 
where "rel_pred_comp R P \<equiv> \<lambda>x. \<exists>y. R x y \<and> P y" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

579 

a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

580 
lemma pcr_Domainp: 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

581 
assumes "Domainp B = P" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

582 
shows "Domainp (A OO B) = (A OP P)" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

583 
using assms unfolding rel_pred_comp_def by blast 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

584 

a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

585 
lemma pcr_Domainp_total: 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

586 
assumes "bi_total B" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

587 
assumes "Domainp A = P" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

588 
shows "Domainp (A OO B) = P" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

589 
using assms unfolding bi_total_def 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

590 
by fast 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

591 

a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

592 
lemma Quotient_to_Domainp: 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

593 
assumes "Quotient R Abs Rep T" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

594 
shows "Domainp T = (\<lambda>x. R x x)" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

595 
by (simp add: Domainp_iff[abs_def] Quotient_cr_rel[OF assms]) 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

596 

a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

597 
lemma invariant_to_Domainp: 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

598 
assumes "Quotient (Lifting.invariant P) Abs Rep T" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

599 
shows "Domainp T = P" 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

600 
by (simp add: invariant_def Domainp_iff[abs_def] Quotient_cr_rel[OF assms]) 
a4d81cdebf8b
better support for domains in Lifting/Transfer = replace Domainp T by the actual invariant in a transferred goal
kuncar
parents:
51374
diff
changeset

601 

47308  602 
subsection {* ML setup *} 
603 

48891  604 
ML_file "Tools/Lifting/lifting_util.ML" 
47308  605 

48891  606 
ML_file "Tools/Lifting/lifting_info.ML" 
47308  607 
setup Lifting_Info.setup 
608 

51994  609 
lemmas [reflexivity_rule] = 
52036
1aa2e40df9ff
reflexivity rules for the function type and equality
kuncar
parents:
51994
diff
changeset

610 
reflp_equality reflp_Quotient_composition is_equality_Quotient_composition 
52307  611 
left_total_fun left_unique_fun left_total_eq left_unique_eq left_total_composition 
612 
left_unique_composition 

51994  613 

614 
text {* add @{thm reflp_fun1} and @{thm reflp_fun2} manually through ML 

615 
because we don't want to get reflp' variant of these theorems *} 

616 

617 
setup{* 

618 
Context.theory_map 

619 
(fold 

620 
(snd oo (Thm.apply_attribute Lifting_Info.add_reflexivity_rule_raw_attribute)) 

621 
[@{thm reflp_fun1}, @{thm reflp_fun2}]) 

622 
*} 

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623 

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lift_definition and setup_lifting generate parametric transfer rules if parametricity theorems are provided
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624 
(* setup for the function type *) 
47777
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use a quot_map theorem attribute instead of the complicated map attribute
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declare fun_quotient[quot_map] 
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626 
declare fun_mono[relator_mono] 
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627 
lemmas [relator_distr] = pos_fun_distr neg_fun_distr1 neg_fun_distr2 
47308  628 

48891  629 
ML_file "Tools/Lifting/lifting_term.ML" 
47308  630 

48891  631 
ML_file "Tools/Lifting/lifting_def.ML" 
47308  632 

48891  633 
ML_file "Tools/Lifting/lifting_setup.ML" 
47308  634 

51994  635 
hide_const (open) invariant POS NEG reflp' 
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637 
end 